Question

我有一个我正在研究的C＃程序，但是我无法按照我想要的那样显示ComboBoxColumn。

我有两张桌子。一个包含价格清单。（列：PriceID，PartID，Price，MinimumQuantity，CustomerID，ExpiryDate）另一个表，零件列表包含（列：PartID，PartNumber）。什么

我想要做的是在PartboBoxColumn中显示PartNumber，并将PartID作为值。但我想为每个价格行自动选择相应的零件编号。

这有意义吗？？

我目前在每一行中获得的是价格，数量和到期日期以及ComboBoxColumn，其中零件清单填充了组合框但没有选择任何值。

请有人帮我这个。

请参阅以下代码。

        DbConnection dbConn = new DbConnection(getConnectionStr());
        dbConn.execQuery("EXEC RBS_CustomerSpecificPriceListSelect " + customerID + ";", "CustomerPriceList");
        dbConn.execQuery("EXEC RBS_PartsSelect;", "Parts");

        DataTable dtCustomerPrices = dbConn.getDataTable("CustomerPriceList");
        DataTable dtParts = dbConn.getDataTable("Parts");

        dgvCustomerPrices.AutoGenerateColumns = false;
        dgvCustomerPrices.DataSource = dtCustomerPrices;
        dgvCustomerPrices.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.AllCells;

        SetupDGVColumns(dtCustomerPrices, dtParts);

然后生成列。

    private void SetupDGVColumns(DataTable dtCustomerPrices, DataTable dtParts)
    {
        // Parts Dropdown
        DataGridViewComboBoxColumn cboPartsColumn = new DataGridViewComboBoxColumn();
        cboPartsColumn.DisplayStyle = DataGridViewComboBoxDisplayStyle.Nothing;
        cboPartsColumn.DataSource = dtParts;
        cboPartsColumn.HeaderText = "PartNumber";
        cboPartsColumn.DisplayMember = "PartNumber";
        cboPartsColumn.ValueMember = "PartID";
        cboPartsColumn.DataPropertyName = "PartID";
        cboPartsColumn.Width = 110;
        cboPartsColumn.AutoComplete = true;
        dgvCustomerPrices.Columns.Add(cboPartsColumn);

        // MinimumQuantity Textbox
        DataGridViewTextBoxColumn tbcMinimumQuantityColumn = new DataGridViewTextBoxColumn();
        tbcMinimumQuantityColumn.DataPropertyName = "MinimumQuantity";
        tbcMinimumQuantityColumn.HeaderText = "MinimumQuantity";
        tbcMinimumQuantityColumn.ValueType = typeof(double);
        tbcMinimumQuantityColumn.Width = 140;
        tbcMinimumQuantityColumn.DefaultCellStyle.Format = "#####0.00";
        dgvCustomerPrices.Columns.Add(tbcMinimumQuantityColumn);

        // Price Textbox
        DataGridViewTextBoxColumn tbcPriceColumn = new DataGridViewTextBoxColumn();
        tbcPriceColumn.DataPropertyName = "Price";
        tbcPriceColumn.HeaderText = "Price";
        tbcPriceColumn.ValueType = typeof(double);
        tbcPriceColumn.Width = 100;
        tbcPriceColumn.DefaultCellStyle.Format = "#####0.00";
        dgvCustomerPrices.Columns.Add(tbcPriceColumn);

        // ExpiryDate Textbox
        DataGridViewTextBoxColumn tbcExpiryDateColumn = new DataGridViewTextBoxColumn();
        tbcExpiryDateColumn.DataPropertyName = "ExpiryDate";
        tbcExpiryDateColumn.HeaderText = "ExpiryDate";
        tbcExpiryDateColumn.ValueType = typeof(string);
        tbcExpiryDateColumn.DefaultCellStyle.Format = "d";
        dgvCustomerPrices.Columns.Add(tbcExpiryDateColumn);
    }

Answer 1

好的，这对我来说是完全白痴。选择组合列数据的SQL查询在SELECT子句中没有相应的行ID。

谢谢大家的帮助！我觉得很傻！

C＃DataGridView ComboBox绑定问题

1 个答案: